Improvement in the manufacture of roasted coffee



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'WILLI-AM r. RHODES, OF PORTLAND, MAINE.

" Letters Patent No. 91,869, dated une 29, 1869.

IMPROVEMENT IN' STEAM-GENERATORS.

The Schedule referred-to in these Letters Patent and making part of the same.

To all whom it may concern Be it known that I, WILLIAM K. RHODES, of Port land, in the county of Cumberland, and State of Maine, have invented a new and useful improved Boiler; and I hereby declare the following to be a full, clear, and exact description thereof, which will enable others to make and use my invention, reference 'being bad to the accompanying drawings, forming part of this speci- -fication, in whichat the ends, in the manner hereinafter described.

These reservoirs are so placed and constructed, that I when attached tothe tubes of the boiler, both ends of the boiler are vertical, which could not otherwise be the case, it is apparent, as the boiler is inclined somewhat, and the tubes are of equal length, aud

placed evenly.

a b show the two reservoirs.

As seen in the drawing, a is largest at the top, and the reverse is the case with b.

These ends forming the reservoirs are secured by means of bolts, 0, extending from one end to the other of the boiler. l

It will be observed that the collections of tubes are inclined from the walls a b, forming the reservoirs.

The purpose of the peculiar formation of the reservoirs is as follows:

As represented in the drawings, the reservoir a is largest at the top, so that this enlarged part forms a reservoir for steam, and if the level of the water be supposed to be as high, or nearly as high as the inside of the top of I), then the enlarged part of 1) provides a place for the largest quantity of water where it is desirable to have it, and the largest part ofa, a

receptacle for steam where it is desirable to have it.

By the employment of the bolts 0 and d, the reservoirs can be readily removed for the purpose of repair,

By 41 the reservoir is attached directly to the tube-sheet.

or for any other purpose.

The tubes, as before stated, are arranged in sections, andbetween these sections I place diaphragms, of brick or other proper substance, in order to economize the heat in the most efi'ectual manner, and at the same time to prevent injury by the fire to those parts of the boiler not containing water, that is, the upper portions.

e show the diaphragms.

By this arrangement, it will be seen that I have a boiler with a vertical face, while, by the relative posi-- tion of the tube-sheet and the walls forming the reservoirs, I have the said spaces, or reservoirs at the most desirable parts.

Economy in the employment of heat is efi'ected by this arrangement, and it is of very simple construction, and can be made 'by an ordinary iron-worker, with common tools.

What I claim as my invention, and desire to secure by Letters Patent, is-- The arrangement'of the diaphragms e e e, in relation to the tubes and the steam and water-spaces of the boiler, constructed substantially as described.

WM. K. RHODES.

Witnesses:

WM. H. CLIFFORD, HENRY G. Hoosron.

UNITED STATES PATENT OFFICE.

EDWARD n. RINEHART, on rrrcrsnune, PENNSYLVANIA.

IMPROVEMENT IN THE MANUFACTURE OF ROASTED COFFEE.

Specification forming part of Letters Patent No. 91,870, dated June 29, 1869.

To all whom it may concern Be it known that l, EDWARD E. RINEHART,

of the city of Pittsburg, in the county of Alle i hereby declare the following to be a full, clear,

and exact description thereof.

My invention relates to the preparation of roasted coffee, whereby, in the process of roasting, the oofiee is coated with mucilaginousor other suitable coating material, so as to retain much of the aroma, which is otherwise lost, andfurnish a clarifying agent when the coffee is prepared for use as a beverage; and the nature ofmy invention consists in the preparation of roasted coffee by intermixing therewith, while in the process of roasting, a mucilaginous or other suitable coating solution, fluid, or mixture, so as to coat orglaze each grain or kernel of coffee therewith while it is being roasted, and thereby preserve the aroma otherwise lost while the coffee is cooling.

To enable others skilled in the art to make and use my invention, I will proceed to describe its operation and manner of use.

The green coffee to be roasted is placed in r aroasting-cylinder, or other known form of receptacle ordinarily used for roasting coffee.

The roasting process is carried on in the usual or any known way. Just before the roasting process is completed, I apply to the cofiee a solution'of gum-arabic, or other like mucilaginous gum, in about the proportion of two pounds of gum to one hundred and sixty pounds of coffee, first dissolving the gum in about a gallon of water. By thoroughly mixing them together, either by stirring them with a stirrer or by revolving the cylinder, or other like means, I cause each grain or kernel of coffee to be coated with the solution, which, becoming dried thereon, efiectuall y prevents the escape of the aroma of the cofiee afterit is removed from the roasting cylinder, and also acts as a clarifying agent when the coffee is being prepared for use as a beverage. In the mode of applying the coating or glazing material, 1 do not limit myself to the use of the gums referred to, but include other coating or glazing substances, fluids, or com pounds suitable for such uses. I am aware that glutinous or gelatinous matter has been I applied to roasted coffee after the coffee was removed from the roasting-cylinder and had become cold out by such process much of the aroma of the coffee is lost while the coffee is cooling. But by the process described the cofiee is effectually coated, and the coating is thoroughly dried while the coffee is still in the roasted, so that the aroma, otherwise lost in cooling, is all saved.

What I claim as my invention, and desire to secure by Letters Patent, is-

The mode of coating or glazing roasted coffee, hereinbefore described, by intermixing therewith, before coating, a mucilaginons or other suitable substance, substantially as described.

In testimony whereof I, the said EDWARD E. RINEHART, have hereunto set my hand.

E. E. RINEHART. Witnesses JOHN GLENN, Tnos. B. KERR. 

